2021 Audi A4 car radio — amplifier (trunk mounted) price snapshot
- Low
- $75
- Average
- $179
- High
- $378
Year & trim-specific price guide
Used 2021 Audi A4 Car Radio — amplifier (trunk mounted) prices
Trim-specific pricing for the amplifier (trunk mounted) variant of the 2021 Audi A4 car radio, built from 50 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 14, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price summary
A used 2021 Audi A4 car radio (amplifier (trunk mounted)) costs $75 to $378, with a median asking price of $195. Based on 50 priced salvage yard listings across the US, updated Oct 14, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$195
Grade B (good)$255
USD
Condition comparison
Price by part grade
Grade AClean / low wear$75–$37840 listings
Grade BStandard used$105–$3789 listings
Grade XUngraded$100–$1001 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $75–$378 | 40 | |
| Grade BStandard used | $105–$378 | 9 | |
| Grade XUngraded | $100–$100 | 1 |
Median by grade
Grade price comparison
Grade A$195
Grade B$255
Ungraded$100
Median asking price by seller-reported condition grade · $75–$378 overall range
Trim-specific context
How does the amplifier (trunk mounted) compare?
This pricing covers the amplifier (trunk mounted) variant of the 2021 Audi A4 car radio, based on 50 priced listings. Its $195 median is 11% below the 2021 Audi A4 car radio overall median of $220.
There is 1 other car radio variant available for the 2021 Audi A4.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
amplifier (trunk mounted) in other model years
Same year, other trims
What other 2021 Audi A4 car radio variants are available?
Back to full guide
2021 Audi A4 car radio — all trims
Common questions
2021 Audi A4 car radio (amplifier (trunk mounted)) FAQ
How much is a used 2021 Audi A4 car radio (amplifier (trunk mounted))?
Based on 50 priced salvage-yard listings, a used 2021 Audi A4 car radio in the amplifier (trunk mounted) variant lists between $75 and $378, with a median asking price of $195.
Which years use the amplifier (trunk mounted) car radio?
The amplifier (trunk mounted) variant appears in model years 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024. Prices and availability may differ by year.